An unseen collection of photos of the Beatles are on display at UC Berkeley, CaliforniaGraduate School of Journalism Gallery

For 40 years, Stephen Goldblatt lugged around a box of film negatives. He never showed anyone until he happened to meet Ken Light, who runs the documentary photography program at UC Berkeley. Goldblatt mentioned that he had once been a photographer in London before becoming a cinematographer.

Interesting photos from the 'mad day out' but the ones on your link are certainly not all unseen. The one with the parrot for example is very well known. I even think it was used for the Hey Jude single publicity.